/*
 * Copyright (C) 2018  niaoge<78493244@qq.com>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.stategen.framework.util;

import java.util.Optional;
import java.util.function.Function;

/**
 * The Class OptionalUtil.
 */
public class OptionalUtil {
    
    public static <V,T> V getOrNull(T t, Function<? super T, V> keyMapper){
        Optional<T> opt = Optional.ofNullable(t); 
        V result = opt.map(keyMapper).orElse(null);
        return result;
    }
}
